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<table width="100%" summary="page for VA"><tr><td>VA</td><td align="right">R Documentation</td></tr></table>

<h2>
Veteran's Administration Lung Cancer Trial
</h2>

<h3>Description</h3>


<p>Veteran's Administration lung cancer trial from Kalbfleisch &amp; Prentice.
</p>


<h3>Usage</h3>

<pre>
VA
</pre>


<h3>Format</h3>


<p>A data frame with columns:
</p>

<dl>
<dt><code>stime</code></dt><dd>
<p>survival or follow-up time in days.
</p>
</dd>
<dt><code>status</code></dt><dd>
<p>dead or censored.
</p>
</dd>
<dt><code>treat</code></dt><dd>
<p>treatment: standard or test.
</p>
</dd>
<dt><code>age</code></dt><dd>
<p>patient's age in years.
</p>
</dd>
<dt><code>Karn</code></dt><dd>
<p>Karnofsky score of patient's performance on a scale of 0 to 100.
</p>
</dd>
<dt><code>diag.time</code></dt><dd>
<p>times since diagnosis in months at entry to trial.
</p>
</dd>
<dt><code>cell</code></dt><dd>
<p>one of four cell types.
</p>
</dd>
<dt><code>prior</code></dt><dd>
<p>prior therapy?
</p>
</dd>
</dl>



<h3>Source</h3>


<p>Kalbfleisch, J.D. and Prentice R.L. (1980)
<EM>The Statistical Analysis of Failure Time Data.</EM>
Wiley.
</p>


<h3>References</h3>


<p>Venables, W. N. and Ripley, B. D. (2002)
<EM>Modern Applied Statistics with S.</EM> Fourth edition.  Springer.
</p>


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